Lesson 2: Metric Mass

1
Lesson 2 Metric Mass

• E.Q. How do we use the metric system to measure
  mass?

2
History of Mass

• The balance was the first mass measuring
  instrument invented.

3
Which is heavier?

• 1 pound or 100 grams
• 1 pound
• 1 kilogram or 1 pound
• 1 kilogram
• 1 ounce or 1000 milligrams
• 1 ounce

4
Which is heavier?

• 1 pound or 100 grams
• 1 pound 453 grams
• 1 kilogram or 1 pound
• 1 kilogram 2.2 pounds
• 1 ounce or 1000 milligrams
• 1 ounce 28.3 grams

5
What exactly is mass?

• Mass refers to the amount of matter in an object.

6
Metric Base Unit

• The base unit of mass in the metric system is the
  ____ and is represented by _.

gram
g
7
Kilogram

• A kilogram is equal to the mass of the __________
  _________ ________.

International
Prototype
Kilogram
8
Mass

• 1 kg ____ g
• 1g ____ mg
• Which is larger?
• 1 kg or 1500 g
• 1200 mg or 1 g
• 12 mg or 12kg
• 4 kg or 4500 g

1000
1000
9
Instrument to Measure Mass
Triple beam balance

• You will use the _____ ____ ______ to find the
  mass of objects.

10
How to use a Triple Beam Balance

• 1st Place the film canister on the pan.
• 2nd Slide the large slider to the right until
  the arm drops below the line and then move it
  back one notch.
• 3rd Repeat the process with the 10 gram weight.
  When the arm moves below the line, back it up
  one groove.
• 4th Slide the one gram weight on the front beam
  until the lines match up.
• 5th Add the amounts on each beam to find the
  total mass to the nearest tenth of a gram.